Improvement in air-valves for steam-radiators



, G. w. BLAKE. AIR VALVE FOR STEAM RADIATORS.

Patented Sept ji fy/76 8868 M f m M .in the Air-Valves of Radiators tor Heating by seat, whereby the difference of expansion, un-

ter, and having their other ends screwed into is long enough to extend right through the UNITED STATES A ENT OFFicE.

- GEORGE W. BLAKE, OF NEW YORK, N. Y.

Specification forming part of Letters Patent No. 4 1,155. da-tcdScptember 13, 1864,

To (ZZZ whom it may concern:

Be it known that I, GEORGE W. BLAKE, or" the city, county, and State of New York, have inventeda new and useful Improvement Steam and I do herebydeclare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and apply the same, reference being bad to the accompanying drawing, forming part of this specification, said drawingrepresenting-a central longitudinal veriical section of my-improvedair-valve applied.

This invention consists in the employment, within one of the iron tubes of a tubular radiator, or within the shell of any other radiator, ot' a brass or composition metal rod secured at one end to the tube or shell, and having at the other end a valve fitted to a stationary der changes oftemperature, between the brass or composition of which the rod is composed and the iron of which the tube or shell is com- 1))S9d is caused to leave the valve open until the radiator is full of steam, and then toelose it.

The radiator represented is composed of a series of radiating tubes, A, closed at one end and openat the other, which communicates with the chamber a of a two chambered steam-box, B, with which the steam-inlet pipe 0 is connected. \Vithin the tubes A. there are arranged smaller tubes b, open at botlreuds, communicating at .one end with the tubes A, near the closed ends of the lat the partitions 0 between the two chambers to and (l of'the box B, and communicating with the chamber d. The steam enters a, filling the pipes A, and especially the air therefrom through the pipes 1) into the chamber 01,

whence it escapes by the air-valve, which is applied in the upper part of the latter chamber.

eis the brass rod, atone end of wh ch isv the conical air-valve '2', which may be made of separate pieces and secured to the rod 0, or

formed on the end of" the rod itself. This rod upper tube A and through the chambers a and (Z. The opposite end to that at which the valve is attached, or on which it is formed, is

rigidly secured ii? the closed end of the upper tnbeA, and the said rod is arranged within the upper tube b. The valve-seat g is formed within a nozzle, D, which is screwed into the outside of the box B. This seat is countersunk, as shown ath, to serve as a guide" to the rod 0. When the radiator is cool, the length of the rod 0 is such that the valve a is at some distance from the seat 9, and the in- 1 terior of the radiator is in free communication with the atmosphere,-and when steam 'is first admitted to the radiator the air escapes freely between the valve iand seaty-and through the open nozzleD; but when the radiator becomes full of steam, and the rod b is thereby heated, the said rod,-expanding in a greater degree than the tube Axvithin which it is arranged, quickly brings the valveclose to its seat and shuts in the steam.

the base'rod to which the valve is attached,

or on which it is formed, is, that the upper tube A, in which it is arranged, whichfis a part of the radiator, is made to perform the duty usually performed by a separate iron tube or rod, and in this way the application of the air-valve is simplified. Another advantage consists in the great length of rod permitted to be used, which enables it to be quickly expanded sufficiently close to, the valve when the steam reachesit.

In a plate radiator or any otherradialor not composed of. tubes the .brass rod may be attached to any suitable part of the shell of the radiator and the same advantages will not be obtained.

I do not claim the formationof the a-ir-valvc upon, or its attachment to, a brass rod; but

What I do claim as my invention, and desire to secure by Letters Patent, is

The combination of the brass orcomposition rod to which the valve is attached, or on which it is formed directly, with. meet the iron tubes of a tubular radiator, or to any part of the interior of the shell of any other kind of radiator, substantially as and for the purpose herein specified.

GEO. V. BLAKE.

Witnesses;

HENRY MORRIS, M. M. LIVINGSTON. 

